Improvement in rolling metals



PATENT EEICE.

WILLlAlVI FIELD, OF PROVIDENCE, R-HOLE ISLAND.

IM PROVEMENT IN ROLLING METALS.

Specification forming part of Letters Patent No. 42,360, dated April 19,1864.

To all whom it may concern Be it known that I, WILLIAM FIELD, ofthe cityand county of Providence, in the Statcof Rhode Island, have invented anew and useful Improvement in Rolling Flat Bar-Iron and other Metals;and I do hereby declare the following to be a full and exact descriptionof the same, reference being had to the accompanying drawing, whichmakes part of this specification, and represents afront elevation of apair of rolls illustrating my invention.

A detrimental feature in iron and other metal formed into flat bars bythe means hitherto employed has resulted from the imA perfect manner inwhich the rolls act upon the edges and corne! s of the bar being rolled.

The object of my invention is to perfect the formation of the bars, andto this end the pres ent invention consists in a peculiar manner offorming the grooves through which the iron is passed, whereby the metalis acted upon With equal et't'ect at all points, as will be hereinafterfully explained.

In order that others skilled in the art to Which my invention appertainsmay be enabled to fully understand and use the same, I Will proceed todescribe its construction and operation.

In the accompanying drawings, A A may represent a pair of rolls, whichmay be journaled, rotated, and made adjustable in customary manner. B Brepresent grooves through `Which the metal is passed to be pressed intothe desired shape. The form of these respective grooves is clearlyillustrated in the drawing. Each groove instead of constituting tworight angles has the figure of a right-angled triangle the hypothenuseof which is in the plane ot the joint a, between the rolls A A, therelative perpendiculars b b of the angular grooves B B being made tooccupy opposite positions, so that when placed in contraposition witheach other hey Will form an oblong rectangular groove in obliqueposition. It will be seen that the metal being passed through thesegrooves is acted upon with equal force at all points, thus rolling theedges in as smooth and even a manner as the upper and under surfaces,producing sharp, well-dened, and regular corners, which is impossible inrolling bar-iron in the manner as heretofore practiced.

rIlle invention is simple and has been found unfailing in its operation.

It will be noticed that I limit my claim to rolling and inishing tlatbars of iron or other metal. The preparatory rolling of the metal may beeffected in the grooves as represented at G C, in the ordinary squaregrooves, or in grooves ot'any other suitable form.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, isv The method hereinbeforedescribed for rolling flat bar-iron or other metal.

WRI. FIELD.

NVitnesses CHARLES A. LAKE, MENZIES SWEET.

